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Recent Progress of Aerosol Light-scattering Enhancement Factor Studies in China

Advances in Atmospheric Sciences 2019年第9期36卷 1015-1026页

作者： Chunsheng ZHAO Yingli YU Ye KUANG Jiangchuan TAO Gang ZHAO Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Institute for Environmental and Climate Research Jinan UniversityGuangzhou 510632China

Assessment of the radiative forcing of aerosols in models still lacks sufficient input data for aerosol hygroscopicity. The light scattering enhancement factor [ f(RH, λ)] is a crucial parameter for describing aerosol hygroscopic growth properties.In this paper, we provide a survey of f(RH, λ) studies in China for the past seven years, including instrument developments of humidified nephelometers, ambient f(RH, λ) measurements in China, f(RH, λ) parameterization schemes, and f(RH, λ)applications in aerosol measurements. Comparisons of different f(RH, λ) parameterizations are carried out to check their performance in China using field measurement datasets. We also summary the parameterization schemes for predicting f(RH, λ)with aerosol chemical compositions. The recently developed methods to observe other aerosol properties using f(RH, λ)measurements, such as calculating the aerosol hygroscopicity parameter, cloud condensation nuclei number concentration,aerosol liquid water content, and aerosol asymmetry factor, are introduced. Suggestions for further research on f(RH, λ) in China are given.

关键词： aerosol hygroscopicity light-scattering enhancement factor humidified nephelometer

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Empirical Model to Calculate the Thermodynamic Wet-Bulb Temperature of Moist Air

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Engineering（科研） 2014年第9期6卷 500-506页

作者： Melitón Estrada-Jaramillo Iván Vera-Romero José Martínez-Reyes Agustina Ortíz-Soriano Edgar Barajas-Ledesma Trajectory of Educational Innovation University of the Ciénega of Michoacán State Sahuayo México Trajectory of Energy Engineering University of the Ciénega of Michoacán State Sahuayo México

An equation model for calculating the adiabatic temperature of the wet-bulb thermometer has been obtained empirical fit through a meteorological database, specificly a trough relative humidity and air temperature. A comparison of the results of calculations with the use of this equation and from meteorological database was made. The model deducted of the comparison is valid for a dry bulb temperature range of 3°C to 35°C and for relative humidity percentage in a range of 7% to 97%. Normalized errors are less than 5.5%. It means a maximum variation of 0.55°C from data. However, this variation from error represents only 3.6% of the data sample. The equation model was satisfactory.

关键词： Wet-Bulb Temperature Equation Dry-Bulb Temperature Relative Humidity Dry Solar Technologies humidified Gas Turbines

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